Yuav ua li cas yog lub magnetic teb kab

Yog tsis muaj ib tug tsis ntseeg, lub teb kab ntawm lub magnetic teb yog tam sim no lub npe hu mus rau tag nrho. Thaum kawg ntawm lub tsev kawm ntawv los qhia txog lawv manifestation rau lub physics qhia. Nco ntsoov tias, raws li ib tug kws qhia ntawv nyob rau hauv ib daim ntawv ntawm daim ntawv tso ib tug mus tas magnet (los yog ob tug txawm, txuas lub orientation ntawm lawv tug), thiab nyob rau sab saum toj ntawm nws sprinkled hlau filings ua nyob rau hauv txoj kev tshawb no ntawm zog txoj kev kawm? Nws yog ib heev tseeb hais tias cov hlau yuav tsum tau muab khaws cia rau ntawm daim ntawv, tab sis muaj ib yam dab tsi coj txawv txawv - kom meej meej twb tsis siv cov kab raws uas lined up sawdust. Nco ntsoov - tsis Attendance thiab kab txaij. Qhov no yog qhov sib nqus teb kab. Es, lawv manifestation. Yuav ua li cas tshwm sim ces thiab yuav ua li cas muaj peev xwm kuv piav?

Cia peb pib los ntawm afar. Ua ke nrog peb nyob rau hauv lub ntiaj teb no pom coexists tshwj xeeb zoo ntawm qhov teeb meem - lub magnetic teb. Nws muab cov interface tsiv elementary hais los yog loj dua lub cev muaj ib qho hluav taws xob xwb, los yog ib tug tej yam ntuj tso magnetic caij. Electric thiab sib nqus phenomena no tsis tsuas interconnected nrog txhua lwm yam, tiam sis feem ntau tsim lawv tus kheej. Piv txwv li, cov hlau uas hluav taws xob tam sim no tsim ib tug sib nqus teb nyob ib ncig ntawm nws tus kheej txoj kab. Conversely, raug alternating magnetic teb rau ib tug raug kaw conductive voj nws tsim lub zog ntawm xwb muaj. Cov yav tas cuab yeej yog siv nyob rau hauv lub generators uas muab hluav taws xob rau tag nrho cov tau txais kev pab. Ib tug piv txwv ntawm electromagnetic teb - lub teeb.

Lub magnetic teb kab yog rotated nyob ib ncig ntawm ib tug neeg xyuas pib los yog, uas kuj muaj tseeb, tsiag ntawv los ntawm kev coj ntawm magnetic induction vector. Kev taw qhia ntawm kev sib hloov yog txiav txim los ntawm txoj cai ntawm tus ntiv tes xoo. Qhia txog ib tug kab - ib tug convention, txij li thaum lub teb yog kis tusyees nyob rau hauv tag nrho cov lus qhia. Qhov no yog hais tias nws muaj peev xwm yuav tuaj raws li ib tug infinite tus naj npawb ntawm kab, ib co kev uas muaj ib tug ntau pronounced siv. Uas yog vim li cas ib co "kab" no yog kom meej meej pom nyob rau hauv lub sim nrog ib tug hlau nplaum thiab filings. Yuav ua li cas yog interesting, lub magnetic teb kab no yeej yuav tsis tu ncua, ces peb yuav tsis hais rau nco ntsoov qhov chaw nws pib thiab qhov chaw uas nws xaus.

Nyob rau hauv cov ntaub ntawv ntawm ib tug mus tas magnet (electromagnet los yog cov zoo li), muaj ib txwm ob tug, affectionately hu ua lub North thiab South. Hais tias cov kab yog nyob rau hauv cov ntaub ntawv no - nws rings thiab ovals, txuas ob tug. Tej zaum nws yog piav nyob rau hauv cov nqe lus ntawm interacting monopoles, tab sis, ces muaj yog ib tug contradiction, raws li uas nws yog tsis yooj yim sua mus rau faib lub monopole. Hais tias yog, tej kev sim magnet division ua rau lub rov tshwm sim ntawm ob peb bipolar qhov chaw.

Lossis loj txaus siab yog lub zog ntawm cov kab ntawm kev quab yuam. Nyob rau cov rooj saab laaj peb twb hais tias, tab sis tswv yim txaus siab yog cov muaj peev xwm tsim nyob rau hauv tus neeg xyuas pib ib electromotive quab yuam (EMF), lub txim ntawm kev uas yog ib qho hluav taws xob tam sim no. Lub ntsiab lus ntawm qhov no yog raws li nram no: thaum tus conductive Circuit Court kab hla los ntawm lub magnetic teb lub dag lub zog (los yog tus neeg xyuas pib tsiv nyob rau hauv ib tug sib nqus teb), electrons nyob rau orbit lwm cov ntaub ntawv uas atoms communicates ntxiv zog, ua rau lawv mus pib ib qho kev ywj directional zog. Peb yuav hais tias yog hais tias tus magnetic teb 'kicks' lub them hais los ntawm tus siv lead ua ntxaij ntoo. Qhov no tshwm sim yog hu ua tus electromagnetic induction thiab yog tam sim no lub ntsiab txoj kev ua ib tug thawj hluav taws xob lub zog. Nws twb nrhiav tau experimentally nyob rau hauv 1831 los ntawm cov lus Askiv physicist Michael Faraday.

Txoj kev tshawb no ntawm magnetic teb pib nyob rau hauv 1269, thaum P. Peregrine sab sis ntawm ib tug kheej kheej magnet nrog steel koob. Yuav luag 300 xyoo tom qab ntawd UG Colchester tswv yim hais tias lub ntiaj teb nws tus kheej yog ib tug lossis loj magnet muaj ob ncej. Ntxiv magnetic phenomena paub zaum tau kawm xws li Lorentz, Maxwell, Ampere, thiab lwm yam Einstein.